Tool and driving member



April 11, 1950 D. H. PROCTOR TOOL AND DRIVING MEMBER Filed Jan. 2, 1947 Inven or Don H. Proc or A L'S Patented Apr. 11, 1950 UNITED] STATES "TL AND unwind-MEMB R, V

I Don H. .Pr.octor, .S,pringfield, ;Mass i i f Lovejoy Tool Company, .Inc., z sprin-gfie'ld, I i incorporation of Vermont.

' Application January 2, 19 17, Seria"l {No.f-7ldi683t- ,sicla ims. (01.216 16) This invention relates to tools such as end mills, or the like, and adapters or other driving members, and has for an object to provide a construction whereby tools of different types and sizes may be readily interchanged and which when in position are firmly fixed and are positively driven from the driving member.

For a complete understanding of this invention, reference may be had to the accompanying drawings in which Figure 1 is a side elevation partly broken away and in section of an adapter to which an end mill is secured and embodying the invention.

. Figure 2 is a front end elevation of the same.

Figure 3 is an exploded perspective view of the mill and the elements for securing it in the adapter.

Referring to the drawings, at I is indicated an adapter having a tapered portion 2 arranged to be engaged in a matingly tapered opening of a rotary spindle, or the like, in accordance with usual practice, to be driven by frictional e,nga"ement between the mating tapered faces. Coaxial with the rotational axis of the adapter I it is provided with a tubular socket 3 extending inwardly from its larger end. This socket 3, shown as nontapered, may receive the shank of a tool which is to. be supported in driven relation to the adapter I. As shown the tool is an end mill 4 having suitable cutting edges thereon, the shank portion 5, as shown best in Figures 1 and 3, being generally cylindrical in outline and of a size to mate the socket 3 of the adapter. One side of the shank 5, however, is cut away to form a laterally fiat face 6 which leaves a space between this flat face and the opposite interior face of the socket 3 and within this space may be placed a segmental element 1. This segmental element 1 and the shank 5 have their mating faces formed with interfitting serrations 8 which permit the element l to beassociated with the shank of the tool in a multiplicity of axial positions, adjacent positions differing from each other by small increments of a size depending upon the size of the serrations 8; When the segmental element 1.is assembled with the shank, the two together may be inserted in the socket 3, substantially filling this socket. The segmental element I is provided in its convex face with a notch 9 presenting a fiat transverse face III at its base, this notch being of sufiicient width to receive therein a key II. This key is segmental in shape and has a longitudinallytapered fiat face I2 which may be engaged with thegiiatface III of the element 1'.

The key I I fits ma transverse bore or passage I 4 through the adapter I, this transverse bore being offset axially from the axis of the socket key I i is pushed into position with its smaller end pushed through the passage M, the element I and the shank 5 of the tool are clamped firmly in position in the socket 3, but they may be released readily by inserting a suitable tool against the small end of the key II and driving the key out from the passage I4, releasing the tool shank and the element I for removal.

Not only does this construction aiford a readily removable lock ng means for retaining the tool shank in position, but the bearing of the key II against the flat base ID of the notch 9 and the engagement of the opposite face of the element 1 against the transversely flat face of the shank provides a positive driving connection between the adapter I and the tool.

From the foregoing description of an embodiment of this invention, it should be evident to those skilled in the art that various changes and modifications might be made without departing from its spirit or scope.

I claim:

1. The combination with a rotary driving member having a socket therein and an opening transverse of and intersecting said socket, of a tool having a shank for insertion in said socket, said shank having a transverse wail member, and a key arranged transverse to the rotational axis of said member operatively engaging said transverse wall member and seated in said opening, holding said shank in said socket and acting as constituting therewith a rotary driving connection between said member and tool.

2. The combination with a rotary driving member havinga tubular socket coaxial with the rotary axis of said member and a lateral passage intersecting said socket, of a rotary tool provided with a shank having a portion fitting said socket and a portion spaced from the wall of said socket, an element substantially fitting said space, said element and shank having confronting faces providing for assembly of said element with said shank in multiplicity of axial inter-fitting relations, said element having a transverse notch and a key arranged transverse to the rotational axis of said memberengageame in said passage 1 and in said notch acting to retain said shank and element in said socket and constituting therewith a driving connection between said member and tool.

3. The combination with a rotary driving member having a tubular socketarranged coaxial with its rotaryaxis and a transverse tubular passage ofiset from the axis of said socket fl but intersectingt said socket, of a tool having a shank portion ion-engagement in said socket,

said shank portion being provided with a laterfiat face, an element engageable with said at face and vvith'said shank substantia11y"fi11- g the cross sectional area of said socket, the

interfltting serrations permitting assembly of i said element and shank in a multiplicity of relamating faces of said shank and elementhaving with a positive driving connection between said member and tool.-

DON H. PROCTOR.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,222,643 Lovejoy Apr. 1'7, 1917 1,964,030 Brush June 26, 1934 Certificate of Correction Patent No. 2,503,685 7 April 11, 1950 DON H. PROCTOR It is hereby certified that error appears in the printed specification of the abov numbered patent requiring correction as follows:

Column 2, line 42, strike out the Words acting as;

and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent Ofiice.

Signed and sealed this 11th day of July, A. D. 1950.

THOMAS F. MURPHY,

Assistant Oommissz'oner of Patents. 

